The Empty House

Main Ideas

• The return of Sherlock Holmes after his presumed death in a confrontation with Professor Moriarty.
• The investigation of Ronald Adair's murder, which is connected to Moriarty's criminal activities.
• The use of deductive reasoning to solve complex crimes.
• The theme of friendship and collaboration between Sherlock Holmes and Dr. Watson.
• The idea that evil can be defeated through intelligence and logic.